http://www.fda.gov/cder/drug/infopage/effexor/default.htm
Center for Drug Evaluation and Research, U.S. Food and Drug Administration
FDA has released questions and answers concerning the use of the antidepressant drug Effexor (venlafaxine) and the class of antidepressant drugs known as selective serotonin reuptake inhibitors, or SSRIs in adults.